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@greybeard - you're correct. The driver for this I believe is higher voltage. I presumed 84V, but I'm also seeing that some of these motors drive at 300V. There's probably a boost converter involved somewhere which means it's probably only pulling 1-2 Amps.
@Autistic, thanks for the feedback. considering the original turns on the motor, this equated to just shy of a volt per turn (85V RMS as the drive voltage). I dropped it to 20 turns, but I wasn't sure if the turns ratio was the only factor. I unwound it and am planning to rewind it this week with 6 turns per tooth, 12 strands in hand. This is just for experimentation at this point. No load on it yet. I have wire ordered, hoping to have it in soon.
I appreciate the feedback, but this does not at all address what I posted. I can easily get a golf cart motor setup, but I'm trying to build up THIS motor. It's a project, I understand, I was looking for feedback on how to make it work.
I agree with you - it makes no sense, but I've experimented with motors, power supplies, etc and seen a different return current from supply current with a device on a plastic frame and no ground connection. Again, my knowledge of ground faulting is minimal, thus reaching out to this community. I can only report what I see, and an ammeter confirmed what I read on my processor board.
@Finbarr - I don't see a violation in this design, if you treat the connection to ground as a variable source. Current has no path to flow through the chassis, until it is given one to do so.
@Lundin - correct. But electronics are incorporated, and this is an electronics discussion. The nature of the unit this is part of is irrelevant. The question at hand is ground faulting.
@Lundin the acronym ROV is VERY common in the robotics world, especially in marine robotics. But let's keep the comments civil and not condescending. The whole point of this post is to ascertain how to detect those currents that may possibly make their way to the battery terminals or to the terminals of the isolated supply by whatever means possible.
@Finbarr I have several isolated systems that drive heavy loads where the current in is less (even by a small degree) than the current out. These systems sit in plastic, so there's no ground connection to leak to, yet we still have a difference. It's counterintuitive, I know, but that's what it is. When I designed power supplies, we always only looked at return power for that reason.
